Improved oil-injector for steam-engines



UNITED STATES PATENT OEEICE.

GEORGE B. BE'AYTON, OF BOSTON, MASSACHUSETTS.

IMPROVED OIL-INJECTOR FOR STEAM-ENGINES.

Specification forming part of Letters Patent No. 57,079, dated August14,1866; antedated July 30, 1866.

To all whom t 'may concern:

Be it known that I, GEORGE B. BRAY'roN, of Boston, in the county ofSuffolk and State of Massachusetts, have invented an ImprovedOil-Injector for Steam-Engines; and I do hereby declare that thefollowing, when taken in connection with the drawing which accompaniesand forms part of this specification, is a description of my inventionsuflicient to enable those skilled in the art to practice it.

The invention relates to that class of lubrieators for steam-engines inwhich a pump is used in connection with the oil-containing reservoir,the barrel of the pump being irst illed in the reservoir, and thenbrought into position to eject its contents into the steam tube orpassage leading tothe steam-chest or parts to be lubricated.

The improvement consists in so construct- 1 ing the instrument that theorifice through which the barrel is alternately charged in the .eer-voirand discharged in the steam-chamber works through a compressed packing,by i. nich means communication between the reservoir and steam-chamber,excepting through the pump, is not only cutoff, but in such manner thatthe parts may be kept perfectly' tight and free from -all liability toleakage of steam.

The drawing represent-s a central section of an instrument embodying myinvention.

a denotes the oil-reservoir. having a screw at its lower end, by whichit is applied to the tube b, leading` to the steam-chest or parts to belubricated In thisA reservoir is the ol` pump, the barrel c of which hasa piston, d, working in it, and an orifice or passage, e, at its lowerend, through which, by the action of the piston, the barrel isalternately filled and discharged. l

Thebarrel c extends down through a metal disk, e, forming the bottom ofthe chamber,

andthrough the top of the tube d, as seen Vin the drawing. It alsoextends through the cap j' of the reservoir, and has a hand-Wheel, g, attop, by which it may be forced from the position seen in the drawing (inwhich position it is held normally by the pressure of the steam againstthe lower end of the barrel or a stem, h, extending down therefrom) downthrough the reservoir and into the tube b u'ntil the oritice of theoil-passage c `is brought into the chamber of the tube b.

To prevent leakage of steam past the barrel into the oil-reservoir,packing 'i is placed between the top of the tube b and the disk e, saidpacking being compressed between the disk and the tube by thescrew-threads by which the reservoir and tube are connected, thiscompression of the packing eifectually preventing escape of steam intothe reservoir.

It will be obvious that the stuffing-box may be readily repaired,whenever necessary, by removing the reservoir from thel tube.

In operating the injector, the piston d is first drawn up, .the oilrushing in through the passage e and filling the barrel. The barrel isthen forced down until the orice e opens into the tube, when by forcingdown the piston the oil will be injected into the steamchamber.

I claim- The construction by which the oil-orifice of theinjecting-barrel is worked through a packing inserted and compressedbetween the reservoir and steam-tube, substantially as set forth.

In Witness whereotI I have hereunto set my hand` this 6th day ofDecember, A. D. 1865.

Y GEO. B. BRAYTON.

Witnesses:

F. GOULD, GEORGE L. ROBERTS.

